there's a real foundation in technology. drones are real and working, but the practical safety and regulatory obstacles to them becoming a reality on a mass scale are so huge that it's really tough to emergency this coming to fruition within the time frame amazon talked about, perhaps ten years, maybe a little bit before then. but we're not -- i can't imagine these ever working in a place like new york. you know, so the market that they could serve really is a subset of amazon's broader audience. we don't know how much delivery is going to cost. there's so many different issues that amazon faces. >> matthew, nick, fascinating discussion. thanks so much. >>> we're back with "politics now" after the break. this iorge. the day building a play set begins with a surprise twinge of back pain... and a choice. take up to 4 advil in a day or 2 aleve for all day relief. [ male announcer ] that's handy. ♪ [ male ♪ nouncer ] that's handy. ♪ i know they say you can't go home again ♪ ♪ ♪ i just had to come back one last time â